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A pop-up canopy. A number of frame tents at the Portland Farmers Market. Semi-permanent gazebos at a holiday resort. A pop-up canopy (or portable gazebo or frame tent in some countries) is a shelter that collapses down to a size that is portable. Typically, canopies of this type come in sizes from five feet by five feet to ten feet by twenty feet.
[4] An inflatable rubber boat, c. 1855. In 1866, four men crossed the Atlantic Ocean from New York to Britain on a three-tube raft called Nonpareil. [5] From 1900 to 1910, the development of rubber manufacturing enabled attempts at producing circular rubber inflatable boats, similar to modern coracles. These were only usable as rafts, and could ...
Even though the 1,178 person capacity of its 20 lifeboats slightly exceeded the required 1,060, it still fell over 2,000 shy of the ship's maximum carrying load of 3,330 people. The need for so many more lifeboats on the decks of passenger ships after 1912 led to the use of most of the deck space available even on the large ships, creating the ...
The G.I. pocket stove is 8 + 1 ⁄ 2 inches (220 mm) high and 4 + 1 ⁄ 2 inches (110 mm) in diameter, and weighs about 3 pounds (1.4 kg). It was designed to burn either leaded or unleaded automobile gasoline (sometimes referred to as "white gasoline" or pure gasoline, without lead or additives).
A coxed four, abbreviated as a 4+, is a racing shell used in the sport of competitive rowing. It is designed for four persons who propel the boat with sweep oars and is steered by a coxswain . The crew consists of four rowers, each having one oar , and a cox .
The boat reached the water safely, with Lowe himself aboard to take charge. After Titanic sank, he brought together Lifeboats 4, 10, 12 and Collapsible Boat D, and transferred Lifeboat 14's passengers to the other lifeboats. Then, assembling a crew of volunteers, he took his boat back to the scene of the sinking to try and find survivors.
Currently the main areas of research are being undertaken by Sierra Space and NASA.NASA is currently studying inflatable lunar bases with the planetary surface habitat and airlock unit [5] which is in an early prototype phase, and has conceptual proposals for utilizing expandable-technology space structures in cislunar and interplanetary crewed exploration spacecraft.